Solid tire for wheels



May 8, 1923. V. M. CABRETOSA SOLID TIRE FOR WHEELS Filed Deo. 4L, 1922 A of F1g.1;

l -41- catches with atented ay 8, 19232.

VALENTIN MARTI CABRETOSA, OF BARCELONA, SPAIN.

SOLID TIRE FOR WHEELS.

Application led December 4, 1922. Serial No. 604,882.

T v0l all u1/om it may concern Be it known that I, VALENTIN MARTI QA- nE'rosA, subject of the' King of Spain, resid-- ing at Barcelona, Spain, have invented certain new and useful Improvements in Solid Tires for Wheels, of which the. following is a specification. t

The invention relates 'to solid india-ruhber tires in which for the sake of cooling the tire, in the interior of the `india-rubber substance, cavities in connection with the open air are provided. According to the lnvention, in order to facilitate the exchange of air as well as to stifl'en the. tire, loose pistonshaped bodies of india-rubber are introduced into the cavities, which bodies may be furnished with grooves the same as the inner walls of the cavities, and, what is more, the bodies of india-rubber have trans verse grooves and the cavities longitudlnal grooves, or vice-versa, whereby the rooves cross each other. By this means shiiting of the bodies of india-rubber within the cavi ties is permitted without interfering with the free exchange of air, While the effective cooling-surfaces are simultaneously. increased.

The annexed drawing gives an example of the mode of construction of the wheeltire in accordance with the present invention. v

Fig. 1 shows a portion of the tire, partly in elevation, and partly in longitudinal section, F Fig. 2 is a transverse section on line II of is a transverse section on line III Fig. 4 is a transverse section on line IV of Fig. 3.

The india-rubber tire -41- is .placed by means of a steel tire -34- and two stra s -51- and h-52- on the felly -31. f the two steel straps the outer 52-' is shaped in an undulated form and jointed with the inner -51- bya rivet or any other analogous means. The india-rubber body corresponding undulations into the undulations of the steel strap' -52. In this manner a mutual displacement between the india-rubber tire and the steel strap support, with respect to the felly, is avoided. The connection with the felly is effected by means of two flanges 35- and -37-, of which the former is integral whereby it compresses face of the tire. The cavities placed in the same transverse plane are connected by cross-channels -46-. Furthermore the cavities are in communication with the open air by lateral channels -47-.' The channels -47- in the successive groups of cavities -44- and -45- are arranged in such a manner as to alternately discharge on the one and on the other side of the tire.

In each`of the cavities -44 and --45-A cylindrical india-rubber bodies 4S- and 49- are arranged, which do not coinpletely fill vthe cavities in a longitudinal direction. The longitudinal space left by the" india-rubber bodies corres Jonds approximately to the diameter of the channels -46- and 4J- The inner walls of the cavities 4% and -45 are screw threaded, while the india-rubber bodies -48- and -49- are externally -longitudinally fiuted or grooved. Thus-access of air is made easy and also the effective cooling surface is `increased by said grooves. These .india-rubber bodies 4B-"and -49- might howevei` be furnished with cross grooves and the walls of the cavities 44- and -45- with longitudinal grooves.

The arrangement ofthe members'-48 and -49-, which do not necessarily have to be applied in pairs to the cavities, act to strengthen the tire -41-, which because of cavities 44 and 45 naturally loses part of its resisting power, and at the Sametime do not interfere with cooling bythe effective ex-` change of air. If great pressure is put upon the tire, then the cavities-,44 and -,-45 will be compressed and be more or less comf. pletely filled by the india-rubber bodies they contain, whereby the tire has an increased resistance equal to a solid india-rubber tire without any cavities. Onv release of rest sure, the cavities will again expand an the india-rubber bodies resume their normal es .l

spaced position 'when outside kair will be sucked in through the channels -46- and -4=7-. An active exchange of heat, and very effective cooling of the tire, will result.

l claim:

1. A solid india-rubber tire for vehicles, having a series of cavities in its interior, channels communicating said cavities with the atmosphere, and separate` india-rubber members positioned in and partly filling said cavities. 4

2. A solid indiafrubber tire for vehicles, having a series of cylindrical cavities disposed in the same, Which'cavitiesl communi- 15 cate with the atmosphere by means of channels and-india-rubber pieces of cylindrical shape partially lling said cavities.

3. A Solid india-rubber tire for vehicles, having a series of cylindrical cavities in the interior of the same, Which cavities are furnished With 'spiral urrows, channels putting certain of these cavities into communication between themselves and also With the exterior, and cylindrical bodies with their surface fluted lengthwise, loosely arranged in the interior of. said cavities and partly illing the same.

.In testimony whereof l have signed my name to this specification.

VALENTIN MARTI CABRETOSA.. 

